Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / arch / arm / mach-imx / mach-kzm_arm11_01.c
1 /*
2  * KZM-ARM11-01 support
3  *  Copyright (C) 2009  Yoichi Yuasa <yuasa@linux-mips.org>
4  *
5  * based on code for MX31ADS,
6  *  Copyright (C) 2000 Deep Blue Solutions Ltd
7  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
8  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  */
20
21 #include <linux/gpio.h>
22 #include <linux/init.h>
23 #include <linux/platform_device.h>
24 #include <linux/serial_8250.h>
25 #include <linux/smsc911x.h>
26 #include <linux/types.h>
27
28 #include <asm/irq.h>
29 #include <asm/mach-types.h>
30 #include <asm/memory.h>
31 #include <asm/setup.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/irq.h>
34 #include <asm/mach/map.h>
35 #include <asm/mach/time.h>
36
37 #include <mach/clock.h>
38 #include <mach/common.h>
39 #include <mach/iomux-mx3.h>
40
41 #include "devices-imx31.h"
42
43 #define KZM_ARM11_IO_ADDRESS(x) (IOMEM(                                 \
44         IMX_IO_P2V_MODULE(x, MX31_CS4) ?:                               \
45         IMX_IO_P2V_MODULE(x, MX31_CS5)) ?:                              \
46         MX31_IO_ADDRESS(x))
47
48 /*
49  *  KZM-ARM11-01 Board Control Registers on FPGA
50  */
51 #define KZM_ARM11_CTL1          (MX31_CS4_BASE_ADDR + 0x1000)
52 #define KZM_ARM11_CTL2          (MX31_CS4_BASE_ADDR + 0x1001)
53 #define KZM_ARM11_RSW1          (MX31_CS4_BASE_ADDR + 0x1002)
54 #define KZM_ARM11_BACK_LIGHT    (MX31_CS4_BASE_ADDR + 0x1004)
55 #define KZM_ARM11_FPGA_REV      (MX31_CS4_BASE_ADDR + 0x1008)
56 #define KZM_ARM11_7SEG_LED      (MX31_CS4_BASE_ADDR + 0x1010)
57 #define KZM_ARM11_LEDS          (MX31_CS4_BASE_ADDR + 0x1020)
58 #define KZM_ARM11_DIPSW2        (MX31_CS4_BASE_ADDR + 0x1003)
59
60 /*
61  * External UART for touch panel on FPGA
62  */
63 #define KZM_ARM11_16550         (MX31_CS4_BASE_ADDR + 0x1050)
64
65 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
66 /*
67  * KZM-ARM11-01 has an external UART on FPGA
68  */
69 static struct plat_serial8250_port serial_platform_data[] = {
70         {
71                 .membase        = KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
72                 .mapbase        = KZM_ARM11_16550,
73                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
74                 .irqflags       = IRQ_TYPE_EDGE_RISING,
75                 .uartclk        = 14745600,
76                 .regshift       = 0,
77                 .iotype         = UPIO_MEM,
78                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
79                                   UPF_BUGGY_UART,
80         },
81         {},
82 };
83
84 static struct resource serial8250_resources[] = {
85         {
86                 .start  = KZM_ARM11_16550,
87                 .end    = KZM_ARM11_16550 + 0x10,
88                 .flags  = IORESOURCE_MEM,
89         },
90         {
91                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
92                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
93                 .flags  = IORESOURCE_IRQ,
94         },
95 };
96
97 static struct platform_device serial_device = {
98         .name           = "serial8250",
99         .id             = PLAT8250_DEV_PLATFORM,
100         .dev            = {
101                                 .platform_data = serial_platform_data,
102                           },
103         .num_resources  = ARRAY_SIZE(serial8250_resources),
104         .resource       = serial8250_resources,
105 };
106
107 static int __init kzm_init_ext_uart(void)
108 {
109         u8 tmp;
110
111         /*
112          * GPIO 1-1: external UART interrupt line
113          */
114         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
115         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
116         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
117
118         /*
119          * Unmask UART interrupt
120          */
121         tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
122         tmp |= 0x2;
123         __raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
124
125         return platform_device_register(&serial_device);
126 }
127 #else
128 static inline int kzm_init_ext_uart(void)
129 {
130         return 0;
131 }
132 #endif
133
134 /*
135  * SMSC LAN9118
136  */
137 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
138 static struct smsc911x_platform_config kzm_smsc9118_config = {
139         .phy_interface  = PHY_INTERFACE_MODE_MII,
140         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
141         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
142         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
143 };
144
145 static struct resource kzm_smsc9118_resources[] = {
146         {
147                 .start  = MX31_CS5_BASE_ADDR,
148                 .end    = MX31_CS5_BASE_ADDR + SZ_128K - 1,
149                 .flags  = IORESOURCE_MEM,
150         },
151         {
152                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
153                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
154                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
155         },
156 };
157
158 static struct platform_device kzm_smsc9118_device = {
159         .name           = "smsc911x",
160         .id             = -1,
161         .num_resources  = ARRAY_SIZE(kzm_smsc9118_resources),
162         .resource       = kzm_smsc9118_resources,
163         .dev            = {
164                                 .platform_data = &kzm_smsc9118_config,
165                           },
166 };
167
168 static int __init kzm_init_smsc9118(void)
169 {
170         /*
171          * GPIO 1-2: SMSC9118 interrupt line
172          */
173         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
174         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
175         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
176
177         return platform_device_register(&kzm_smsc9118_device);
178 }
179 #else
180 static inline int kzm_init_smsc9118(void)
181 {
182         return 0;
183 }
184 #endif
185
186 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
187 static const struct imxuart_platform_data uart_pdata __initconst = {
188         .flags = IMXUART_HAVE_RTSCTS,
189 };
190
191 static void __init kzm_init_imx_uart(void)
192 {
193         imx31_add_imx_uart0(&uart_pdata);
194         imx31_add_imx_uart1(&uart_pdata);
195 }
196 #else
197 static inline void kzm_init_imx_uart(void)
198 {
199 }
200 #endif
201
202 static int kzm_pins[] __initdata = {
203         MX31_PIN_CTS1__CTS1,
204         MX31_PIN_RTS1__RTS1,
205         MX31_PIN_TXD1__TXD1,
206         MX31_PIN_RXD1__RXD1,
207         MX31_PIN_DCD_DCE1__DCD_DCE1,
208         MX31_PIN_RI_DCE1__RI_DCE1,
209         MX31_PIN_DSR_DCE1__DSR_DCE1,
210         MX31_PIN_DTR_DCE1__DTR_DCE1,
211         MX31_PIN_CTS2__CTS2,
212         MX31_PIN_RTS2__RTS2,
213         MX31_PIN_TXD2__TXD2,
214         MX31_PIN_RXD2__RXD2,
215         MX31_PIN_DCD_DTE1__DCD_DTE2,
216         MX31_PIN_RI_DTE1__RI_DTE2,
217         MX31_PIN_DSR_DTE1__DSR_DTE2,
218         MX31_PIN_DTR_DTE1__DTR_DTE2,
219 };
220
221 /*
222  * Board specific initialization.
223  */
224 static void __init kzm_board_init(void)
225 {
226         imx31_soc_init();
227
228         mxc_iomux_setup_multiple_pins(kzm_pins,
229                                       ARRAY_SIZE(kzm_pins), "kzm");
230         kzm_init_ext_uart();
231         kzm_init_smsc9118();
232         kzm_init_imx_uart();
233
234         pr_info("Clock input source is 26MHz\n");
235 }
236
237 /*
238  * This structure defines static mappings for the kzm-arm11-01 board.
239  */
240 static struct map_desc kzm_io_desc[] __initdata = {
241         {
242                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
243                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
244                 .length         = MX31_CS4_SIZE,
245                 .type           = MT_DEVICE
246         },
247         {
248                 .virtual        = MX31_CS5_BASE_ADDR_VIRT,
249                 .pfn            = __phys_to_pfn(MX31_CS5_BASE_ADDR),
250                 .length         = MX31_CS5_SIZE,
251                 .type           = MT_DEVICE
252         },
253 };
254
255 /*
256  * Set up static virtual mappings.
257  */
258 static void __init kzm_map_io(void)
259 {
260         mx31_map_io();
261         iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
262 }
263
264 static void __init kzm_timer_init(void)
265 {
266         mx31_clocks_init(26000000);
267 }
268
269 static struct sys_timer kzm_timer = {
270         .init = kzm_timer_init,
271 };
272
273 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
274         .boot_params = MX3x_PHYS_OFFSET + 0x100,
275         .map_io = kzm_map_io,
276         .init_early = imx31_init_early,
277         .init_irq = mx31_init_irq,
278         .timer = &kzm_timer,
279         .init_machine = kzm_board_init,
280 MACHINE_END